<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    package org.hackystat.telemetry.analyzer.configuration;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    /**<a name="line.3"></a>
<FONT color="green">004</FONT>     * Provides a Factory class for generating the single PersistentTelemetryDefinitionManager<a name="line.4"></a>
<FONT color="green">005</FONT>     * and as many non-persistent ones as required.  <a name="line.5"></a>
<FONT color="green">006</FONT>     * <a name="line.6"></a>
<FONT color="green">007</FONT>     * @author (Cedric) Qin Zhang<a name="line.7"></a>
<FONT color="green">008</FONT>     */<a name="line.8"></a>
<FONT color="green">009</FONT>    public class TelemetryDefinitionManagerFactory {<a name="line.9"></a>
<FONT color="green">010</FONT>    <a name="line.10"></a>
<FONT color="green">011</FONT>      private static TelemetryDefinitionManager theGlobalInstance; <a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>      /**<a name="line.13"></a>
<FONT color="green">014</FONT>       * Gets the singleton global instance of &lt;code&gt;TelemetryDefinitionManger&lt;/code&gt;. <a name="line.14"></a>
<FONT color="green">015</FONT>       * <a name="line.15"></a>
<FONT color="green">016</FONT>       * @return The global instance of &lt;code&gt;TelemetryDefinitionManager&lt;/code&gt;.<a name="line.16"></a>
<FONT color="green">017</FONT>       */<a name="line.17"></a>
<FONT color="green">018</FONT>      public static TelemetryDefinitionManager getGlobalPersistentInstance() {<a name="line.18"></a>
<FONT color="green">019</FONT>        // The null situation should only occur during testing. <a name="line.19"></a>
<FONT color="green">020</FONT>        if (theGlobalInstance == null) { //NOPMD because this only happens during testing. <a name="line.20"></a>
<FONT color="green">021</FONT>          theGlobalInstance = new PersistentTelemetryDefinitionManager(null);<a name="line.21"></a>
<FONT color="green">022</FONT>        }<a name="line.22"></a>
<FONT color="green">023</FONT>        return theGlobalInstance;<a name="line.23"></a>
<FONT color="green">024</FONT>      }<a name="line.24"></a>
<FONT color="green">025</FONT>      <a name="line.25"></a>
<FONT color="green">026</FONT>      /**<a name="line.26"></a>
<FONT color="green">027</FONT>       * Creates the singleton persistent instance, using the passed defDir to find telemetry <a name="line.27"></a>
<FONT color="green">028</FONT>       * definitions.  Note that this must be called when the Restlet server is being created and<a name="line.28"></a>
<FONT color="green">029</FONT>       * thus in advance of any calls to getGlobalPersistentInstance.<a name="line.29"></a>
<FONT color="green">030</FONT>       * @param defDir A string indicating the directory where telemetry definitions (in addition to <a name="line.30"></a>
<FONT color="green">031</FONT>       * the "builtin" definitions) will be found.<a name="line.31"></a>
<FONT color="green">032</FONT>       */<a name="line.32"></a>
<FONT color="green">033</FONT>      public static void buildGlobalPersistentInstance(String defDir) {<a name="line.33"></a>
<FONT color="green">034</FONT>        theGlobalInstance = new PersistentTelemetryDefinitionManager(defDir);<a name="line.34"></a>
<FONT color="green">035</FONT>       }<a name="line.35"></a>
<FONT color="green">036</FONT>    <a name="line.36"></a>
<FONT color="green">037</FONT>      /**<a name="line.37"></a>
<FONT color="green">038</FONT>       * Creates a new non-persistent version of<a name="line.38"></a>
<FONT color="green">039</FONT>       * &lt;code&gt;TelemetryDefinitionManager&lt;/code&gt; instance. Note that the returned<a name="line.39"></a>
<FONT color="green">040</FONT>       * instance merges its name space with the name space in the global instance.<a name="line.40"></a>
<FONT color="green">041</FONT>       * This means that if a definition name is used in the global instance, it<a name="line.41"></a>
<FONT color="green">042</FONT>       * cannot be used in the returned instance.<a name="line.42"></a>
<FONT color="green">043</FONT>       * <a name="line.43"></a>
<FONT color="green">044</FONT>       * @param linkToGlobalSingleton True if the definitions in global singleton telemetry manager<a name="line.44"></a>
<FONT color="green">045</FONT>       *        should be merged to this instance.<a name="line.45"></a>
<FONT color="green">046</FONT>       * <a name="line.46"></a>
<FONT color="green">047</FONT>       * @return A non-persistent version of &lt;code&gt;TelemetryDefinitionManager&lt;/code&gt;<a name="line.47"></a>
<FONT color="green">048</FONT>       *         instance.<a name="line.48"></a>
<FONT color="green">049</FONT>       */<a name="line.49"></a>
<FONT color="green">050</FONT>      public static TelemetryDefinitionManager createNonPersistentInstance(<a name="line.50"></a>
<FONT color="green">051</FONT>          boolean linkToGlobalSingleton) {<a name="line.51"></a>
<FONT color="green">052</FONT>        return new NonPersistentTelemetryDefinitionManager(linkToGlobalSingleton);<a name="line.52"></a>
<FONT color="green">053</FONT>      }<a name="line.53"></a>
<FONT color="green">054</FONT>    }<a name="line.54"></a>




























































</PRE>
</BODY>
</HTML>
